At 11:29 AM 2/16/2002 -0600, Jamie Ekholm wrote: >I am just curious. Does anyone know why it seems Shergottites are more >common than Nakhlites or Chassignites? It just seems that if a new >Martian meteorite is found, you can almost bet it will be a >Shergottite. Is it just that they had a better chance of surviving the >journey from impact on mars to the fall through our atmosphere? > >Jamie
There could be any number of reasons for that. The impactor that sent the SNCs on their way here could have hit an area composed dominantly of shergottite type rocks or if there were multiple impacts, the distribution of the types of SNCs could be telling us something of the distribution of rock types on Mars. As the SNCs are closely related in physical properties, if not mineralogically, I don't think it tells anything about re-entry survival characteristics. Anyone else got any ideas? Steven Singletary 54-1224 Dept. Earth, Atmospheric and Planetary Sciences M.I.T. Cambridge, MA 02139 Tel - 617.253.6398 Fax - 617.253.7102 ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
